This lesson from Illuminations asks students to make and use slide rules to discover the properties of logarithms. The class will use rulers to add and subtract visually, which will add to the depth of their mathematical...

This unit from Illuminations includes activities that help students explore percent concentrations. Two lessons are included. "Mix It Up," which involves using two colors of beads to form two different percent mixes. The...

This math skills review was written for first year college chemistry students who have weak math backgrounds, but is useful for all science students in high school and college. Topics covered include algebraic...

André Heck is a project manager at the Faculty of Science of the Universiteit van Amsterdam, and he recently contributed this thoughtful article to the "Loci" project at the Mathematical Sciences Digital Library. In this...

This site includes a number of mathematical lessons that help to illustrate historical math concepts. Each link provides a short example that would provide helpful supplemental materials in mathematics education. The...